<script setup lang="ts">
import { ref, computed, onMounted } from 'vue'

// 1. 定义 ref 设置为 null
const hRef = ref(null)

onMounted(() => {
    console.log(hRef.value)
    // 3.通过 as 进行类型断言
    const h1 = hRef.value! as HTMLHeadingElement
    // 类型 可以通过 document.querySelector 传入具体的标签名来获取
    // document.querySelector('h1')

    // h1.innerHTML = '123'
})
</script>

<template>
    <!-- 2. 和具体的 dom 元素关联起来 -->
    <h1 ref="hRef">我是一个标题哦~</h1>
</template>

<style>
* {
    margin: 0;
    padding: 0;
    list-style: none;
}

.news {
    display: flex;
    height: 120px;
    width: 600px;
    margin: 0 auto;
    padding: 20px 0;
    cursor: pointer;
}

.news .left {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding-right: 10px;
}

.news .left .title {
    font-size: 20px;
}

.news .left .info {
    color: #999999;
}

.news .left .info span {
    margin-right: 20px;
}

.news .right {
    width: 160px;
    height: 120px;
}

.news .right img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
</style>